Clam shell tool box



FIG. 1 is a perspective view of a clam shell tool box showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a right side view;

FIG. 4 is a left side view;

FIG. 5 is a bottom plan view;

FIG. 6 is a rear elevational view; and,

FIG. 7 is a front elevational view. 

The ornamental design for a clam shell tool box, as shown and described. 